Loft Conversion Drawings in Yiewsley | From £1,225

No Article 4 Direction covers Hillingdon, which keeps the Yiewsley permitted-development route open on unlisted houses. What defines Yiewsley is that it is 1930s semi-detached, and design decisions here answer to that rather than to a pattern book. If your Yiewsley address is inside Harefield, treat permitted development as reduced and plan for a full Hillingdon Council application. The Yiewsley boundary position decides how much can be done under permitted development.

The Yiewsley Article 4 position is established at survey, before design. A Yiewsley survey establishes the 1930s semi-detached dimensions that decide the scheme — original rear wall, floor levels, and ridge height against Yiewsley High Street. The borough policy layer over every UB7 address is set out on Hillingdon planning. The Yiewsley survey then carries into planning permission in Yiewsley if the project runs on to construction.

Before Hillingdon Council determines anything, London Borough of Hillingdon has to validate the Yiewsley submission — one to two weeks, longer if a plan is missing. Survey first: we measure the Yiewsley property in person, then draw the existing plans, sections and elevations from that data.

Statutory periods: 8 weeks from validation for a householder application, 13 weeks for a major scheme, 6 weeks for prior approval with a 21 days neighbour consultation, and 5 weeks for a full plans building control submission. A party structure notice requires one month notice and two months where excavation is involved.

An officer report on the UB7 case is written after the consultation closes. You get the full Yiewsley set as PDFs, plus CAD on request.

A UB7 objection about light or overlooking carries more weight than one about taste. The Yiewsley survey records every opening, level change and structural wall.

Serve UB7 party wall notices before work starts, not after. Once consent is granted, building regulations drawings follows for the UB7 property.

Yiewsley is characterised by 1930s semi-detached, concentrated across UB7 in the West Drayton / Sipson / Harmondsworth area. Every Yiewsley scheme starts from what is actually there: 1930s semi-detached, surveyed to the millimetre before a proposal is drawn. Reading that across to Yiewsley stock: the 1930s hipped roof here needs a hip-to-gable before a rear dormer works, which pushes the volume calculation toward the 50 m³ permitted-development ceiling. For a Yiewsley owner it decides the structural spec. Case officers at Hillingdon Council look first at whether a UB7 scheme keeps the eaves and ridge line of the Yiewsley row.

Subterranean UB7 work needs a structural case as much as a planning one. Because the Yiewsley survey is drawn properly once, house extension drawings for UB7 properties and architectural drawings build on it rather than starting again.

What the Yiewsley drawing pack contains

Contents of the UB7 drawing pack:

• existing roof plan and section for the Yiewsley property
• proposed dormer elevations
• volume calculation sheet
• staircase and head-height sections
• structural steel layout

Local landmarks that shape a Yiewsley application

• Shakespeare's Way — frontages visible from the highway, so Harefield materials detail governs the Shakespeare's Way elevation.
• Colne Valley Regional Park — roof profiles that set the ridge datum Hillingdon Council measures a Colne Valley Regional Park dormer against.
• Stockley Park — gardens deep enough for the 8 weeks householder route on a Stockley Park plot.
• Yiewsley High Street — proposals within its setting are drawn with the context elevation included.

Getting to a Yiewsley survey

Surveyors travel to UB7 addresses from the studio; the nearest stations are London Paddington station, West Drayton, Abbey Wood, Reading. Appointments are booked in Yiewsley on weekdays and Saturdays, and the measured survey of a standard 1930s semi-detached takes two to three hours.

Where Yiewsley sits

on Ordnance Survey grid reference TQ061804, inside the Uxbridge and South Ruislip parliamentary constituency. That grid reference is not trivia — the Yiewsley site location plan is drawn over it, and Hillingdon Council validates the address against it. Source.

Practical detail for a Yiewsley submission: London Paddington station and West Drayton and Abbey Wood and Reading put Yiewsley within easy reach; correspondence uses WEST DRAYTON; dialling code 01895. Site plans are drawn to the address as Hillingdon Council holds it.

Yiewsley postcode coverage

We draw UB7 (West Drayton / Sipson / Harmondsworth), shared with West Drayton addresses, and Hillingdon Council validates each on the address itself.

Streets and stations in Yiewsley

Around Yiewsley that means Shakespeare's Way, Colne Valley Regional Park and Stockley Park. most Yiewsley sites are within walking distance of London Paddington station or West Drayton or Abbey Wood.

Areas we cover around Yiewsley

Harrow on the Hill (HA1), Pinner (HA5), Stanmore (HA7), Harrow Weald (HA3), Kenton (HA3), Wealdstone (HA3) are all within the same Hillingdon policy area as Yiewsley.

You know the number before the surveyor is booked. A Yiewsley quote moves on what the building is, not on how long we spend: the 1930s semi-detached, the party wall position, the Harefield question.

Statutory application fees are set by regulation, not by the council: £548 householder, £610 for a new dwelling, £274 for a lawful development certificate, £249 for prior approval.

Yiewsley applicants pay the statutory fee direct to London Borough of Hillingdon. London planning approval-rate dataset · Hillingdon planning · Loft Conversion Drawings London-wide · loft conversion drawings in Harrow on the Hill.

The technologist drawing your Yiewsley scheme is MCIAT chartered — the professional body for technical design and building-regulations competence. Borderline is normal in Yiewsley; we resolve it with Hillingdon Council before submission rather than after refusal.

Drawings are produced by chartered members of the Chartered Institute of Architectural Technologists (MCIAT), the professional body for technical design and building-regulations competence. First-time approval across our London caseload is 98%. Statutory fees shown are those in force in England in 2026 under the Town and Country Planning (Fees for Applications) Regulations. Confirm your local authority at gov.uk and submission requirements on the Planning Portal. Studio: 71–75 Shelton Street, London WC2H 9JQ.

Most Yiewsley enquiries turn into a fixed quote the same day. This Yiewsley page was reviewed in August 2026.